Support structure for exhaust system part

Abstract

A support structure for an exhaust system part that configures an exhaust system of an internal combustion engine for a vehicle includes a bracket and a support member. The bracket includes a first plate and a second plate. The first plate has both end portions attached to the second plate, and the second plate has both end portions attached to the exhaust system part. A first space is defined between the first plate and the second plate, and a second space is defined between the second plate and the exhaust system part. Each of the first space and the second space has a first open end disposed on the vehicle front side, and has a second open end disposed on the vehicle rear side. The first plate, the first space, the second plate, and the second space are disposed between the support member and the exhaust system part.

What is claimed is: 
     
       1. A support structure for an exhaust system part that configures an exhaust system of an internal combustion engine for a vehicle, the support structure comprising:
 a metallic bracket, the bracket being attached to the exhaust system part; and 
 a support member configured to support the bracket, the support member being made of an elastic body, wherein: 
 the bracket includes a first plate and a second plate, the first plate having a first end portion and a second end portion as viewed in a direction crossing a vehicle front-rear direction, the first end portion and the second end portion of the first plate each being attached to the second plate, and the second plate having a first end portion and a second end portion as viewed in the direction crossing the vehicle front-rear direction, the first end portion and the second end portion of the second plate each being attached to the exhaust system part, the first plate including a side surface portion that extends in a first direction toward the exhaust system part, the first end portion of the first plate extending from an end of the side surface portion and in a second direction oblique to the first direction, the first plate contacting the second plate along an entirety of the first end portion of the first plate, the second plate having an inner side surface portion extending in the first direction and parallel to the side surface portion of the first plate, the second plate further having a mounting base extending in the second direction and parallel to the first end portion of the first plate, and an outer side surface portion of the second plate extending obliquely between the mounting base and the first end portion of the second plate toward the exhaust system part; 
 a first space is defined between the first plate and the second plate; 
 a second space is defined between the second plate and the exhaust system part; 
 each of the first space and the second space has a first open end disposed on a vehicle front side, and has a second open end disposed on a vehicle rear side; 
 the first plate, the first space, the second plate, and the second space are disposed between the support member and the exhaust system part; 
 the support member is arranged at a position spaced apart from the first plate; 
 the first plate includes a groove-shaped portion at a central portion thereof, the groove-shaped portion being recessed toward the second plate in a direction that intersects the vehicle front-rear direction; and 
 the second plate includes a groove shaped-portion at a central portion thereof, the groove-shaped portion being recessed toward the exhaust system part in the direction that intersects the vehicle front-rear direction. 
 
     
     
       2. The support structure according to  claim 1 , wherein:
 the bracket includes a hollow rod; 
 a first end portion of the rod is attached to the first plate; and 
 a second end portion of the rod is attached to the support member. 
 
     
     
       3. The support structure according to  claim 2 , wherein the rod has an opening portion and is disposed such that the opening portion faces the vehicle front side. 
     
     
       4. The support structure according to  claim 1 , wherein:
 the exhaust system part includes a sub-muffler extending in the vehicle front-rear direction; and 
 two sets of brackets and support members are provided such that one of the two sets is provided on a right side of the sub-muffler and the other one of the two sets is provided on a left side of the sub-muffler, and the two sets are provided symmetrically with respect to the sub-muffler. 
 
     
     
       5. A support structure for an exhaust system part that configures an exhaust system of an internal combustion engine for a vehicle, the support structure comprising:
 a metallic bracket, the bracket being attached to the exhaust system part; and 
 a support member configured to support the bracket, the support member being made of an elastic body, wherein: 
 the bracket includes a first plate and a second plate, the first plate having a first end portion and a second end portion as viewed in a direction crossing a vehicle front-rear direction, the first end portion and the second end portion of the first plate each being attached to the second plate, and the second plate having a first end portion and a second end portion as viewed in the direction crossing the vehicle front-rear direction, the first end portion and the second end portion of the second plate each being attached to the exhaust system part, the first plate including a side surface portion that extends in a first direction toward the exhaust system part, the first end portion of the first plate extending from an end of the side surface portion and in a second direction oblique to the first direction, the first plate contacting the second plate along an entirety of the first end portion of the first plate, the second plate having an inner side surface portion extending in the first direction and parallel to the side surface portion of the first plate, the second plate further having a mounting base extending in the second direction and parallel to the first end portion of the first plate, and an outer side surface portion of the second plate extending obliquely between the mounting base and the first end portion of the second plate toward the exhaust system part; 
 a first space is defined between the first plate and the second plate; 
 a second space is defined between the second plate and the exhaust system part; 
 each of the first space and the second space has a first open end disposed on a vehicle front side, and has a second open end disposed on a vehicle rear side; 
 the first plate, the first space, the second plate, and the second space are disposed between the support member and the exhaust system part; 
 the bracket includes a hollow rod; 
 a first end portion of the rod is attached to the first plate; 
 a second end portion of the rod is attached to the support member; and 
 both an opening portion on the first end portion of the rod and an opening portion on the second end portion of the rod are disposed so as to face the vehicle front side. 
 
     
     
       6. A support structure for an exhaust system part that configures an exhaust system of an internal combustion engine for a vehicle, the support structure comprising:
 a metallic bracket, the bracket being attached to the exhaust system part; and 
 a support member configured to support the bracket, the support member being made of an elastic body, wherein: 
 the bracket includes a first plate and a second plate, the first plate having a first end portion and a second end portion as viewed in a direction crossing a vehicle front-rear direction, the first end portion and the second end portion of the first plate each being attached to the second plate, and the second plate having a first end portion and a second end portion as viewed in the direction crossing the vehicle front-rear direction, the first end portion and the second end portion of the second plate each being attached to the exhaust system part, the first plate including a side surface portion that extends in a first direction toward the exhaust system part, the first end portion of the first plate extending from an end of the side surface portion and in a second direction oblique to the first direction, the first plate contacting the second plate along an entirety of the first end portion of the first plate, the second plate having an inner side surface portion extending in the first direction and parallel to the side surface portion of the first plate, the second plate further having a mounting base extending in the second direction and parallel to the first end portion of the first plate, and an outer side surface portion of the second plate extending obliquely between the mounting base and the first end portion of the second plate toward the exhaust system part; 
 a first space is defined between the first plate and the second plate; 
 a second space is defined between the second plate and the exhaust system part; 
 each of the first space and the second space has a first open end disposed on a vehicle front side, and has a second open end disposed on a vehicle rear side; 
 the first plate, the first space, the second plate, and the second space are disposed between the support member and the exhaust system part; 
 the bracket includes a hollow rod; 
 a first end portion of the rod is attached to the first plate, a portion of the first plate to which the first end portion of the rod is attached being recessed toward the second plate; 
 a second end portion of the rod is attached to the support member; and 
 a sub-muffler, the second plate, the first plate, the rod and the support member are disposed in this order along a vehicle width direction, the support member being an elastic body made of an elastomer.